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 mechanical wave 机械波(29)力学波动(4)
 机械波
 Discussion of Computer Teaching of Mechanical Vibration and Mechanical Wave 机械振动与机械波的微机教学探讨 短句来源 Energy Flow and Application of Mechanical Wave 机械波的能流及其应用 短句来源 The Problem on Half-wave Loss of Mechanical Wave 也谈机械波的“半波损失”问题 短句来源 A Proof of Reflection and Transmission Coefficient of Plane Mechanical Wave 平面机械波反射系数与透射系数的一种证明方法 短句来源 Two Typical Problems in Doppler Effect Formula of Mechanical Wave 机械波的多普勒频移公式中两个典型问题 短句来源 更多
 力学波动
 Moreover, the mechanical wave theory, new operators and nonlinear equations are connected. 同时它可以联系于力学波动论、新的算符和量子理论中的非线性方程 . 短句来源 Mechanical Wave Theory,New Operators and Nonlinear Equations in Quantum Theory 力学波动论 ,量子理论中的新算符和非线性方程 短句来源 Four-Dimensional Generalized Symmetrical Formalism in Classical Physics and Quantum Mechanics and Mechanical Wave Theory 经典物理和量子力学中的四维广义对称形式和力学波动论 短句来源 Along an opposite direction of the developed quantum mechanics,some new results may be derived by using a method where the wave quantities ν,λ are substituted into various mechanical equations. It is called the mechanical wave theory. 沿着与量子力学发展相反的方向,由波动的物理量ν,λ代入各种经典力学方程可以得到若干新的结果,称为力学波动论. 短句来源
 “mechanical wave”译为未确定词的双语例句
 The Use of the Mechanical Wave Maker of Flap Type to Produce Irregular Waves 利用规则波造波机产生不规则波 短句来源 Spinning effect of domestic high precision without mechanical wave roller 国产高精度无机械波罗拉的纺纱效果 短句来源 Spinning Practice of Rollers without Mechanical Wave 无机械波罗拉的生产实践 短句来源 The paper has proved that when mechanical wave runs into the bound surface, the reflective wave would lose the half-wave, which is interrelated with the character of the medium and the angle of incidence. 证明了机械在入射界面反射时存在"半波损失"与媒质性质和入射角的关系. 短句来源 By this solution in the control and simulation of the motion of trees blown by wind, the behavior of moving branches of trees is simulated based on the contemporary non-linear mechanics,and that of waving branches based on the principle of mechanical wave. A test example of animation created solely by a primary graphics library is provided to show the feasibility of the approach. 本文首次基于动力学对树在风中的摇曳进行了计算机模拟，对这一问题进行了探索并给出了解决方案．根据树木结构的物理性质可把其分为固定枝条、可动枝条以及波动枝条．固定枝条无需处理．可动枝条的行为采用现代非线性力学理论来解决，而波动枝条的解决则是基于波动理论．同时基于OpenGL，图形库函数制作出了计算机动画实例． 短句来源 更多

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 mechanical wave
 Two types of wave are possible: a mainly mechanical wave and a mainly thermal wave. Kinetic equation for a quantum mechanical wave packet in a medium containing quasistatic potential fluctuations A new quantum mechanical wave equation describing the dynamics of an extended electron is derived via Bohmian mechanics. The most general quantum mechanical wave equation for a massive scalar particle in a metric generated by a spherically symmetric mass distribution is considered within the framework of higher derivative gravity (HDG). The main interpretations of the quantum-mechanical wave function are presented emphasizing how they can be divided into two ensembles: The ones that deny and the other ones that attribute a form of reality to quantum waves. 更多
 In a thin film of nematic liquid crystals, whose "director" has a perpendicular alignment to the glass base plate, a new mechanical wave caused by the disturbance of the "director" is excited by a mechanical method. The wave was predicted by Fergason and Brown previously (1) and discussed theoretically by many authors (2-4>, (6-9). This new wave was observed between two perpendicular polarizers and some photos were presented. The wave length remains approximately the same value... In a thin film of nematic liquid crystals, whose "director" has a perpendicular alignment to the glass base plate, a new mechanical wave caused by the disturbance of the "director" is excited by a mechanical method. The wave was predicted by Fergason and Brown previously (1) and discussed theoretically by many authors (2-4>, (6-9). This new wave was observed between two perpendicular polarizers and some photos were presented. The wave length remains approximately the same value (λ =7.2cm) for different frequencies (f=2-20Hz). In our primary analysis, we ignored the dispersive process caused by viscosity, we have postulated that the disturbance of the "director" takes place in a thin layer L which is smaller than the thickness of the cell (i,e Lwave (1∝1/f, or L=b/f), where b is a constant having an approximate value of 3.7cm·sec-1. 在“指向矢”垂直于基片表面排列的向列型液晶薄层中，用机械方法激发出一种新 的机械波──液晶中的曲率弹性波。这种波是由Ｆｅｒｓａｓｏｎ和Ｂｒｏｗｎ所预言的［１］。后来 又有很多作者从各方面进行讨理论上的讨论［２－４］［６－９］。 给出在正交偏振片下观察到的照片。在测量的频率范围内（２Ｈｚ－２０Ｈｚ），波长λ 几乎不变．λ≈７．２ｃｍ（对应合厚３０μｍ），并且液晶合的厚度变化（２０，３０，５０μｍ）对 波长的影响也很小。 在初步理论分析中，忽略粘滞损耗造成的衰减。我们假定参与振动的液晶层的厚度 Ｌ小于合厚 ｄ，并且 Ｌ和激发频率ｆ成反比（Ｌ∝１／ｆ或Ｌ＝ｂ／ｆ，ｂ为常数）， 可以解释观察到的结果。 We computed the upward propagation and evolution of different kinds of perturbations in the solar atmosphere,using HSRA as the unperturbed model.The dynamical equation used is an one dimensional compressible flow equation under gravitational acceleration at the solar surface.Polytropic gas equations of different y's are used to close this equation set.Our results show that an upward progagated small perturbation can evolve into shocks at certain heights which are nearly independent of the thermodynamic processes... We computed the upward propagation and evolution of different kinds of perturbations in the solar atmosphere,using HSRA as the unperturbed model.The dynamical equation used is an one dimensional compressible flow equation under gravitational acceleration at the solar surface.Polytropic gas equations of different y's are used to close this equation set.Our results show that an upward progagated small perturbation can evolve into shocks at certain heights which are nearly independent of the thermodynamic processes involved,but depending strongly upon the strength of the initial perturbation.But the existence and interference of the turbalent field in the solar atmosphere will not allow these perturbations to develop into shocks.This confirms the idea that the mechanical waves generated from the convection zone are not very effective in heating the chromosphere and corona. 本文用多方过程方程式封闭一维带引力场的流体力学方程组,用不同的γ值计算了不同类型的扰动在HSRA太阳大气模型中向上传播和演化。说明在太阳大气中向上传播的小扰动能够发展成为激波;激波的形成高度基本上不受热力学过程的影响,而与扰动强度关系很大,愈小的扰动传播愈高;但由于太阳大气中湍流场的存在,完全有可能使这样小的扰动在未形成激波前就被破坏掉。这就证实了一些人认为的对流层机械波并不是一个对色球和日冕的有效加热机制的说法。 In order to excite single mode mechanical waves from LiNbO8 piezoelectric slices, the cutting directions of these slices must be restricted to certain definite values. In this article, we will theoretically determine these single mode directions by solving the piezoelectrically stiffened Christoffel equations and calculate the corresponding wave velocities and electromechaaical coupling constants. 为了使铌酸锂换能器激发单一模式的机械波,晶片的切割方向必须限制在某些确定的数值上。本文将通过求解压电增劲Christoffel方程,从理论上确定这些方向并计算相应方向上的波速和机电耦合系数。 << 更多相关文摘
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